Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Ford Explorer TimberlineFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code (DTC) Chart
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
Diagnostic Trouble Code Chart
| Module | DTC | Description | Action |
|---|---|---|---|
| BCM | B11D9:16 | Vehicle Battery: Circuit Voltage Below Threshold | GO to Pinpoint Test Y |
| BCM | B11D9:17 | Vehicle Battery: Circuit Voltage Above Threshold | GO to Pinpoint Test Z |
| BCM | U0100:87 | Lost Communication With ECM/PCM "A": Missing Message | GO to Pinpoint Test A |
| BCM | U0101:87 | Lost Communication with TCM: Missing Message | GO to Pinpoint Test B |
| BCM | U0121:87 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: Missing Message | GO to Pinpoint Test C |
| BCM | U0131:87 | Lost Communication With Power Steering Control Module: Missing Message | GO to Pinpoint Test D |
| BCM | U0137:87 | Lost Communication With Trailer Brake Control Module: Missing Message | GO to Pinpoint Test E |
| BCM | U0151:87 | Lost Communication With Restraints Control Module: Missing Message | GO to Pinpoint Test F |
| BCM | U0155:87 | Lost Communication With Instrument Panel Cluster (IPC) Control Module: Missing Message | GO to Pinpoint Test G |
| BCM | U0184:87 | Lost Communication With Radio: Missing Message | GO to Pinpoint Test H |
| BCM | U0198:87 | Lost Communication With Telematic Control Module: Missing Message | GO to Pinpoint Test I |
| BCM | U0199:87 | Lost Communication With "Door Control Module A": Missing Message | GO to Pinpoint Test J |
| BCM | U0200:87 | Lost Communication With "Door Control Module B": Missing Message | GO to Pinpoint Test K |
| BCM | U0208:87 | Lost Communication With "Seat Control Module A": Missing Message | GO to Pinpoint Test L |
| BCM | U0212:87 | Lost Communication With Steering Column Control Module: Missing Message | GO to Pinpoint Test M |
| BCM | U0232:87 | Lost Communication With Side Obstacle Detection Control Module "A": Missing Message | GO to Pinpoint Test N |
| BCM | U0233:87 | Lost Communication With Side Obstacle Detection Control Module "B": Missing Message | GO to Pinpoint Test N |
| BCM | U023A:87 | Lost Communication With Image Processing Control Module A: Missing Message | GO to Pinpoint Test O |
| BCM | U0252:87 | Lost Communication With Lighting Control Module: Rear "B": Missing Message | GO to Pinpoint Test P |
| BCM | U0253:87 | Lost Communication With Accessory Protocol Interface Module: Missing Message | GO to Pinpoint Test Q |
| BCM | U0256:87 | Lost Communication With Front Controls Interface Module "A" : Missing Message | GO to Pinpoint Test R |
| BCM | U0293:87 | Lost Communication With Hybrid/EV Powertrain Control Module "A": Missing Message | GO to Pinpoint Test S |
| BCM | U1000:00 | Solid State Driver Protection Active: Driver Disabled: No Sub Type Information | GO to Pinpoint Test T |
| BCM | U1A4C:55 | Build/End of Line Mode Active: Not Configured | GO to Pinpoint Test U |
| BCM | U2005:85 | Vehicle Speed: Signal Above Allowable Range | GO to Pinpoint Test V |
| BCM | U2100:00 | Initial Configuration Not Complete: No Sub Type Information | GO to Pinpoint Test W |
| BCM | U2101:00 | Control Module Configuration Incomplete: No Sub Type Information | GO to Pinpoint Test W |
| BCM | U2200:00 | Control Module Configuration Memory Corrupt: No Sub Type Information | GO to Pinpoint Test W |
| BCM | U3000:49 | Control Module: Internal Electronic Failure | GO to Pinpoint Test X |
| BCM | U3006:16 | Control Module Input Power "A": Circuit Voltage Below Threshold | GO to Pinpoint Test Y |
| BCM | U3006:17 | Control Module Input Power "A": Circuit Voltage Above Threshold | GO to Pinpoint Test Z |
| BCM | U3006:1C | Control Module Input Power "A": Circuit Voltage Out of Range | GO to Pinpoint Test Y |
| BCM | U3006:1C | Control Module Input Power "A": Circuit Voltage Out of Range | GO to Pinpoint Test Z |
| BCM | U3007:16 | Control Module Input Power "B": Circuit Voltage Below Threshold | GO to Pinpoint Test Y |
| BCM | U3007:17 | Control Module Input Power "B": Circuit Voltage Above Threshold | GO to Pinpoint Test Z |
| BCM | U3013:16 | Control Module Input Power "C": Circuit Voltage Below Threshold | GO to Pinpoint Test Y |
| BCM | U3013:17 | Control Module Input Power "C": Circuit Voltage Above Threshold | GO to Pinpoint Test Z |
| BCM | U3014:16 | Control Module Input Power "D": Circuit Voltage Below Threshold | GO to Pinpoint Test Y |
| BCM | U3014:17 | Control Module Input Power "D": Circuit Voltage Above Threshold | GO to Pinpoint Test Z |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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